there's many different ways of doing things. so we would be out there telling the afghans, this is how you conduct police operations, this is how we do police training, this is how you hold your weapon and engage the enemy, and then several weeks later another force would come in and not that it was necessarily wrong, but it was different. so from the afghan perspective, incredibly frustrating to understand where they are going and what they need to be doing and what is right and what is wrong. so in closing if someone were to ask me from 2010 to where we're at now, is there hope i would say, yes, there is. as we stand down our combat forces and shift to an advisory and a training role i think we're going to be able to take our lessons lerbed -- learned and ensure that we can continue to build on what we've done.